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⚡️ Day 4: Performance and cleanup

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LeMoonStar 2024-12-04 19:45:57 +01:00
parent 2d89799e44
commit d25a9aad57
1 changed files with 23 additions and 37 deletions
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44
src/days/d04.rs
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@ -1,21 +1,7 @@
use crate::dprintln;
use super::{Answer, Day, DayImpl};
const CURRENT_DAY: u8 = 4;
#[derive(Debug, Clone, Copy)]
enum Direction {
East,
West,
North,
South,
NorthEast,
NorthWest,
SouthEast,
SouthWest,
}
#[derive(Debug, Clone)]
pub struct LetterWall(Vec<Vec<char>>);
@ -31,8 +17,8 @@ impl LetterWall {
}
#[rustfmt::skip]
fn get_xmas_directions(&self, x: usize, y: usize) -> Vec<Direction> {
let mut directions = vec!();
fn get_xmas_direction_count(&self, x: usize, y: usize) -> u64 {
let mut directions = 0;
let map = (
self.at(x, y), self.at(x+1, y), self.at(x+2, y), self.at(x+3, y),
@ -47,7 +33,7 @@ impl LetterWall {
_, _, _, _,
_, _, _, _
) = map {
directions.push(Direction::East);
directions += 1;
}
if let (
@ -56,7 +42,7 @@ impl LetterWall {
_, _, _, _,
_, _, _, _
) = map {
directions.push(Direction::West);
directions += 1;
}
if let (
@ -65,7 +51,7 @@ impl LetterWall {
Some('A'), _, _, _,
Some('S'), _, _, _
) = map {
directions.push(Direction::South);
directions += 1;
}
if let (
@ -74,7 +60,7 @@ impl LetterWall {
Some('M'), _, _, _,
Some('X'), _, _, _
) = map {
directions.push(Direction::North);
directions += 1;
}
if let (
@ -83,7 +69,7 @@ impl LetterWall {
_, _, Some('A'), _,
_, _, _, Some('S')
) = map {
directions.push(Direction::SouthEast);
directions += 1;
}
if let (
@ -92,7 +78,7 @@ impl LetterWall {
_, _, Some('M'), _,
_, _, _, Some('X')
) = map {
directions.push(Direction::NorthWest);
directions += 1;
}
if let (
@ -101,7 +87,7 @@ impl LetterWall {
_, Some('A'), _, _,
Some('S'), _, _, _
) = map {
directions.push(Direction::SouthWest);
directions += 1;
}
if let (
@ -110,7 +96,7 @@ impl LetterWall {
_, Some('M'), _, _,
Some('X'), _, _, _
) = map {
directions.push(Direction::SouthEast);
directions += 1;
}
directions
@ -124,22 +110,22 @@ impl LetterWall {
self.at( x, y+2), self.at( x+1, y+2), self.at( x+2, y+2)
) {
(
Some('M'), _,Some('S'),
Some('M'), _, Some('S'),
_, Some('A'), _,
Some('M'), _, Some('S'),
) => true,
(
Some('S'), _,Some('S'),
Some('S'), _, Some('S'),
_, Some('A'), _,
Some('M'), _, Some('M'),
) => true,
(
Some('M'), _,Some('M'),
Some('M'), _, Some('M'),
_, Some('A'), _,
Some('S'), _, Some('S'),
) => true,
(
Some('S'), _,Some('M'),
Some('S'), _, Some('M'),
_, Some('A'), _,
Some('S'), _, Some('M'),
) => true,
@ -152,7 +138,7 @@ impl LetterWall {
let mut count = 0;
for y in 0..self.0.len() {
for x in 0..self.0[0].len() {
count += self.get_xmas_directions(x, y).len();
count += self.get_xmas_direction_count(x, y);
}
}
return count as u64;